ExecuteSQLCreateTable: Difference between revisions

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This function creates a table in the registry if it does not already exist. This function should be used in the initialization step of any script that uses SQL registry functions to write to a table, because that table may not exist yet if the script is run for the first time.
This function creates a table in the database. It doesn't do anything when the table already exists. You can use this function in the loading or initialisation step of your script to ensure all the necessary tables that you use actually exist.


The actual SQL query that is executed will be the following:
The executed SQL query is the following:


<pre>CREATE TABLE IF NOT EXISTS <table> ( <definition> )</pre>
<pre>[sql]CREATE TABLE IF NOT EXISTS <table> ( <definition> )</pre>


==Syntax==  
==Syntax==  
<syntaxhighlight lang="lua">
<syntaxhighlight lang="lua">
nil createRegistryTable ( string table, string definition )
nil executeSQLCreateTable ( string table, string definition )
</syntaxhighlight>  
</syntaxhighlight>  


===Required Arguments===  
===Required Arguments===  
*'''table:''' The table you want to create.
*'''table:''' The name of the table you want to create.
*'''definition:''' The definition of the table, this includes the column definitions and constraints in SQL syntax. For each column definition, you start with the name (without any spaces), optionally followed by the [http://www.sqlite.org/datatype3.html SQL data type] and constraint (all separated by spaces). Each column definition is separated by a comma (,) (e.g. ''field1,field2,field3'' or ''field1 INTEGER,field2 TEXT'' as definition). Please refer to the [http://www.sqlite.org/lang_createtable.html SQLite SQL documentation] for more information on creating even more complex tables.
*'''definition:''' The definition of the table, this includes the column definitions and constraints in SQL syntax. For each column definition, you start with the name (without any spaces), optionally followed by the [http://www.sqlite.org/datatype3.html SQL data type] and constraint (all separated by spaces). Each column definition is separated by a comma (,) (e.g. ''field1,field2,field3'' or ''field1 INTEGER,field2 TEXT'' as definition). Please refer to the [http://www.sqlite.org/lang_createtable.html SQLite SQL documentation] for more information on creating even more complex tables.



Revision as of 15:09, 23 September 2006

This function creates a table in the database. It doesn't do anything when the table already exists. You can use this function in the loading or initialisation step of your script to ensure all the necessary tables that you use actually exist.

The executed SQL query is the following:

[sql]CREATE TABLE IF NOT EXISTS <table> ( <definition> )

Syntax

nil executeSQLCreateTable ( string table, string definition )

Required Arguments

  • table: The name of the table you want to create.
  • definition: The definition of the table, this includes the column definitions and constraints in SQL syntax. For each column definition, you start with the name (without any spaces), optionally followed by the SQL data type and constraint (all separated by spaces). Each column definition is separated by a comma (,) (e.g. field1,field2,field3 or field1 INTEGER,field2 TEXT as definition). Please refer to the SQLite SQL documentation for more information on creating even more complex tables.

Returns

The function doesn't return anything.

See Also